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- Question
TM01 mode in circular waveguide is analogous to
Options- A. TM10 mode in square waveguide
- B. TM11 mode in square waveguide
- C. TM20 mode in square waveguide
- D. TM02 mode in square waveguide
- Correct Answer
- TM11 mode in square waveguide
- 1. In TE10 mode the largest electric field in a rectangular wave guide, occurs
Options- A. along centre line of broad wall (i.e. x = a/2)
- B. along the broad wall (i.e. x = 0 and x = a)
- C. either (a) or (b)
- D. neither (a) nor (b) Discuss
- 2. In microwave system, waveguide twists
Options- A. change the plane of polarization of a propagating wave
- B. change the direction of a propagating wave
- C. change the mode of a propagating wave
- D. both (b) and (c) Discuss
- 3. Assertion (A): In rectangular waveguide TE01 mode is just TE10 mode rotated by 90°.
Reason (R): When a rectangular waveguide is rotated by 90°, the broad and narrow dimensions get interchanged.
Options- A. Both A and R are correct and R is correct explanation of A
- B. Both A and R are correct but R is not correct explanation of A
- C. A is correct but R is wrong
- D. A is wrong but R is correct Discuss
- 4. If a and b are the width and height of rectangular wave-guide the cut off wavelength ?c for TE20 mode is equal to
Options- A. a
- B. a + b
- C. a - b
- D. a2 + b2 Discuss
- 5. In p mode of operation of magnetron the spikes due to phase focussing effect rotate at an angular velocity corresponding to
Options- A. one pole/cycle
- B. two pole/cycle
- C. four pole/cycle
- D. six pole/cycle Discuss
- 6. The scattering matrix of magic tee is
Options- A.
- B.
- C.
- D.
Discuss
- 7. In a coaxial line
Options- A. the characteristic impedance is less than that of two wire line
- B. the wave velocity is less than that of two wire line
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 8. In a shield helix
Options- A. the spacing between adjacent turns is very large
- B. the spacing between adjacent turns approaches zero
- C. the spacing between adjacent turns approaches zero and wire thickness approaches zero
- D. the spacing between adjacent turns is very large wire thickness approaches zero Discuss
- 9. In a multicavity klystron amplifier the electron velocity of the order of
Options- A. 10 m/s
- B. 103 m/s
- C. 106 m/s
- D. 1012 m/s Discuss
- 10. Which of these statements is correct?
Options- A. Ridge guide is essentially a form of capacitively loaded guide.
- B. Ridge guide is essentially a form of inductively loaded guide.
- C. Ridge guide is essentially a form of resistively loaded guide.
- D. Ridge guide has higher power handling capacity than rectangular waveguide. Discuss
Microwave Communication problems
Search Results
Correct Answer: along centre line of broad wall (i.e. x = a/2)
Correct Answer: change the plane of polarization of a propagating wave
Correct Answer: Both A and R are correct and R is correct explanation of A
Correct Answer: a
Correct Answer: two pole/cycle
Correct Answer:
Correct Answer: both (a) and (b)
Correct Answer: the spacing between adjacent turns approaches zero and wire thickness approaches zero
Correct Answer: 106 m/s
Correct Answer: Ridge guide is essentially a form of capacitively loaded guide.
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